S
M
T
W
T
F
S
26
88°
67°
27
88°
69°
28
92°
69°
29
93°
72°
30
92°
71°
31
92°
71°
1
93°
70°
2
92°
71°
3
90°
71°
4
91°
70°
5
92°
71°
6
90°
67°
7
88°
68°
8
89°
68°
9
88°
67°
10
86°
67°
11
86°
68°
12
87°
67°
13
87°
67°
14
88°
68°
15
88°
68°
16
90°
69°
17
90°
70°
18
91°
69°
19
90°
68°
20
86°
66°
21
86°
66°
22
89°
68°
23
90°
69°
24
91°
70°
25
90°
69°
26
90°
70°
27
91°
68°
28
90°
68°
29
90°
68°
30
88°
67°
31
89°
68°
1
Hist. Avg.
86°
66°
2
Hist. Avg.
86°
66°
3
Hist. Avg.
86°
66°
4
Hist. Avg.
86°
66°
5
Hist. Avg.
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Mill
Fort Mill's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 66° and 72°. The average high for August is 89° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fort Mill. See also: September | October | November.
